Bar-supporting pin



. Patented Oct. 28, 1924.

N-ETED" STATES PATENT OFFICE.

WILLIAM C. BURRELIJ OF KANKAKEE, AND ROBERT E. ROBERTSON, CHICAGO,

' ILLINOIS.

BAR-SUPPORTING- PIN.

To all whom it may concern:

Be it known that we, WILLIAM C. BURRELL and ROBERT E. ROBERTSON, citizens of the United States, respectively, residing at Kankakee, in the countyof Kankakee and State of Illinois, and at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in' Bar-Supporting Pins, of which the following is a specification.

The invention relates to improvements in bar supporting pins for holding reen-forcing bars, in the manufacture of concrete roadways, elevated above the surface which the conglomerate is intended to cover.

One of the objects of the invention is to provide'a pin having a gage or stop to determine the height of the bar holding part above the ground surface.

A further object is to provide a one-piece sheet metal structure having a pointed, transversely curved end to enter the ground, laterally extending feet serving as a gage and as supports when in contact with the ground surface and bar holding means at its {p end to receive a horizontally disposed ar. y

Another object is to provide a pin, substantially as described, having an addi- 30 tional gage part to determine its position with respect to a side wall: to support a bar parallel with said side wall and parallel with the ground surface adjacent said side wall. A further object is to generally improve 5 means for holding and supportingreenforcing bars. v Other objects and'advantages will become readily. apparent from a consideration with the following description when considered in connection with the accompanying drawings forming a part hereof, wherein Fig. 1 is a transverse section taken thru a bar or tube and thin the vertical side wall showing the bar gauging and supporting devicein place.

Fig. 2 is a side elevation of one form of the device with both members thereof in the sameilongitudinal plane. i

. Fig. 3 is ,a'view similar to Fig. 2 showing P the device at 90 degrees from Fig. 2.

Fig. 4 is a top plan view of the device, shown in Figs. 2 and 3. I p v Fig. 5 is a modification'of Flg. 4.

the

Fig. 6 is an elevation of the device with the horizontal member shown in Fig. 1 re moved.

Fig. 7 is a top plan view thereof. 1

In all-the views the same reference characters are employed to indie ite similar parts. 7

In Fig. 1 a channel bar 10 constituting a vertical side wall to define the limits of the conglomerate or concrete for the roadway is laid along the way where the road 'is to be constructed.

A reenforcing bar or tube 11 to be embedded in the concrete is to be supported a uniform distance from the ground surface 12 and spaced a uniform distance from the vertical side wall 10.

. The supporting and gaging pin shown in Figs. 2 and 3 has two attached members'13 and 14, similar in general configuratiom joined together by the thin flat integral strip 15.. With this exception the two members are of a channel formation throughout as more clearly shown in Fig. 4. Each mem ber 13 and 14 has two prongs 16 and 17 pro viding a groove or concaved surface 18 at the extreme end of each member. When the member 13 is bent at 15, so that said member 13 is in a plane substantially at right angles to the member 14, when the latter is driven into the ground the surfaces form a circle and embrace a round or square bar or tube 11. The member 13 with its outer end in contact with the wall of the channel bar 10 determines the location where the member 14 shall be pushed or driven into ground. Intermediate the pointed end 14 and the remote end of the member 14 are two latverally projecting feet 1919. These flat feet are for contact with the ground when the point 14 is pushed or driven into the ground. They serve as a gage to determine the height of the upper end of the bar sup= porting pin from the ground surface.

event the prongs 16 and 17 may be bent over the top of the bar, as shown by dotted lmes.

The pin-illustrated Fig. 6 shows alongitudinal'crimp, at

" strength to the pin to resist v pin in either form ismade the ban plied stress; 1 1v Below the feet 19' the part 14? of the pin to be driven into the ground is pointed. The feet 19 not only serve as a but the also lateral movement o t e pin an therefore the pin-"is maintained in a substantially vertical position and, furthermore, the wei 'ht' oi the bar cannot cause the pin to sink device shown in F 6 is always used. The

. alternative form wn in F1 1 and 3, inclusive, is used at intervals a ong the bar. to preserve true, parallel alignment with the side wall 10.

Having dwcribed our invention what we a claim as new and-desire s b ters Patent, is;

1. A bar sup ortcomimrieing pini-of channel shape t ruout havh? out-turned a concave feet near its longitudinal m1 rtion and abaneeperiinto the mind. The i 0? sheet metal,-

part at its "upper to receive e L mam 2. her sir port comprising a pin of channel formatizm thruout with a longitudi- -1:nally"extending crimp withinthe channel, a stop near its mid-portion to determine the height of the support. thereabove and a her support at its upper end.

3. A bat an port comprising a pin of channel formation thruout; feet turned outwardly from said side members at substantially right angles from the body of the pin near the mid-portion thereof and a receptacle to receive the bar at the upper end of the pin.

4. A her support comprising a pin inem-- her; lateflrallyextending feet near the mid.- portion of the pin;'f a laterally extensible member, and bar clamping means between the members to engage -and hold the bar when said member is extended at substan- 3 tiallyright angles to the pin member.

5. A bar sup rt comprising twochannelf ed together by a fiat paras."-

members join concave depression 111 the contiguous ends of the side walls of each member to embrace and clamp a bar when the two members occupy positions substantially at right an- IDiet from near In testimony whereof we hereunto set our hands. V

0. 13mm; ROBERT E. BOBERTSQN;

e les to each other and laterally extending" the -P 9* am e m- 

